National Trends Network
The NTN provides a long-term record of the acids, nutrients, and base cations in U.S. precipitation.
Mercury Deposition Network
The MDN provides data on the geographic distributions and trends of mercury in precipitation.
Atmospheric Integrated Research Monitoring Network
The AIRMoN reports daily measurements for studying and modeling atmospheric processes.
Tracking Atmospheric Deposition and its Effects
The NADP has been monitoring precipitation chemistry since 1978.
Atmospheric Mercury Network
The AMNet reports atmospheric mercury concentrations for determination of mercury dry deposition.
Ammonia Monitoring Network
The AMON measures air concentration of ammonia using passive monitors
UPCOMING EVENTS
- NADP 2019 Spring Meeting
May 13-16, 2019
Madison, WI - Acid Rain 2020
Oct. 19-23, 2020
Niigata City, Japan
RECENT NEWS
- Happy 40th Anniversary to NADP!
- The NADP Program Office has moved! Read the latest transition news.
- Issue 10 of our Newsletter is available
- Total Deposition Maps are now available
- Litterfall Mercury Monitoring is NADP's latest initiative.
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